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Soluble polyolefin resin and preparation method thereof

A polyolefin resin and polyolefin technology, applied in the field of soluble polyolefin resin and its preparation, can solve the problems of laborious, difficult dissolution, and time-consuming dissolution of dry polyolefin raw materials, so as to increase solubility, simplify the dissolution process, The effect of preventing crystallization

Active Publication Date: 2014-01-22
SHANDONG JINING RUYI WOOLEN TEXTILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dissolution of pure dry polyolefin raw materials is time-consuming and laborious, especially as the molecular weight increases, the dissolution becomes more and more difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1, the preparation of easily soluble type ultra-high molecular weight polyethylene resin 1

[0024] Using the slurry polymerization process, the polymerization tank is pretreated first, and then the measured dispersion medium and catalyst are added. After stirring for 2 hours, the measured slurry containing the catalyst is added. The temperature of the polymerization tank is set at 80 °C and the pressure is 34 bar. The rotation speed is 300 rpm, ethylene monomer is introduced to start the reaction, cyclohexane is used as the dispersion medium, and triethylaluminum and titanium tetrachloride are used as catalysts. Cool down after the polymerization reaction, discharge the slurry material directly from the bottom valve, add white oil of equal quality, distill at 85°C, remove the dispersion medium cyclohexane, and obtain ultra-high molecular weight polyethylene resin containing white oil, wherein, The mass percent content of polyethylene is 80%.

[0025] Compar...

Embodiment 2

[0028] Embodiment 2, the preparation 2 of easily soluble ultra-high molecular weight polyethylene resin

[0029] Using the slurry polymerization process, the polymerization tank is pretreated first, and then the measured dispersion medium and catalyst are added. After stirring for 3 hours, the measured slurry containing the catalyst is added. The temperature of the polymerization tank is set at 75 °C and the pressure is 30 bar. The rotation speed is 350rpm, and ethylene monomer is introduced to start the reaction. Decalin is used as a dispersion medium, and triethylaluminum and titanium trichloride are used as catalysts. Cool down after the polymerization reaction, and directly discharge the slurry material from the bottom valve to obtain an ultra-high molecular weight polyethylene resin containing decahydronaphthalene, wherein the mass percentage of polyethylene is 50%.

[0030] Comparative dissolution experiment: Take 10 g of the ultra-high molecular weight polyethylene resi...

Embodiment 3

[0033] Embodiment 3, the preparation 3 of easily soluble ultra-high molecular weight polyethylene resin

[0034] Using the slurry polymerization process, the polymerization tank is pretreated first, and then the measured dispersion medium and catalyst are added. After stirring for 4 hours, the measured slurry containing the catalyst is added. The temperature of the polymerization tank is set at 80 °C and the pressure is 40 bar. The rotation speed is 250rpm, and ethylene monomer is introduced to start the reaction. Toluene is used as the dispersion medium, and silica gel-supported Cr / Al-SiO 2 is a catalyst (which is composed of silica gel and Cr and Al supported on the silica gel, wherein the mass percentage of Cr is 1%, and the mass percentage of Al is 2.3%). Cool down after the polymerization reaction, and discharge the slurry material directly from the bottom valve to obtain an ultra-high molecular weight polyethylene resin containing toluene, wherein the mass percentage of ...

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PUM

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Abstract

The invention discloses a soluble polyolefin resin and a preparation method thereof. The method comprises anyone of steps comprising: (a), polymerizing alpha-olefin under the action of a catalyst to polyolefin, and adding a solvent to the polyolefin to obtain the polyolefin resin; (b), polymerizing the alpha-olefin under the action of the catalyst and a disperse medium to obtain the polyolefin resin; and (c), polymerizing the alpha-olefin under the action of the catalyst and a disperse medium to obtain polyolefin, adding the solvent to the polyolefin, and removing the disperse medium to obtain the polyolefin resin. The solvent is introduced in the preparation of a polyolefin raw material process, so a subsequent dissolving technology is simplified, dissolving is accelerated, and the soluble polyolefin resin is formed. The introduction of the solvent into the above raw material effectively prevents polyolefin crystallization, maintains a random coil form, and increases the solubility of the polyolefin.

Description

technical field [0001] The invention relates to an easily soluble polyolefin resin and a preparation method thereof. Background technique [0002] Polyolefin is a general term for a class of thermoplastic resins obtained by homopolymerization or copolymerization of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-octene and other α-olefins and certain cycloolefins, such as Polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid or acrylate copolymer, poly-1-butene, poly-4-methyl-1-pentene, cycloolefin polymer, etc., among which polyethylene, Polypropylene has the largest output and is the most widely used. Polyolefin resin is the main product of petrochemical industry. It has the characteristics of low price, simple molding process and excellent product performance, such as low relative density, good chemical resistance, good water resistance, excellent mechanical properties, electrical insulation, etc. It can be manufactured Films, pipes,...

Claims

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Application Information

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IPC IPC(8): C08J3/09C08F110/02
Inventor 朱才镇刘小芳赵宁张小莉刘剑洪徐坚
Owner SHANDONG JINING RUYI WOOLEN TEXTILE CO LTD
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